Soil quality enhancement by multi-treatment in the abandoned land of dry-hot river valley hydropower station construction area under karst desertification environment

PLoS ONE, Год журнала: 2024, Номер 19(7), С. e0306368 - e0306368

Опубликована: Июль 31, 2024

The medium-intensity karst desertification environment is typically characterized by more rocks and less soil. abandoned land in the construction areas of dry-hot river valley hydropower station has infertile soil, severe degradation, very low productivity. Therefore, it urgent to improve soil quality curb increasingly degrading reuse site. Few studies have focused on effect restoration comprehensive evaluation with multi-treatment area. Here, 9 measures 1 control group were installed at Guangzhao Hydropower Station Guizhou Province, China, for physical chemical property analysis. In total, 180 90 samples collected three occasions May, August, December 2022. Soil fertility evaluated under various using membership functions principal component analysis (PCA). This study showed that almost all could enhance water storage capacity (The average total porosity treatments was 57.56%, while 56.37%). With increase porosity, evaporation became stronger, content decreased. Nevertheless, no decrease observed presence vegetation cover (soil content: 16.46% hairy vetch, 13.99% clover, 13.77% control). They also proved manure, synthetic fertilizer, straw promote available nutrients (Soil nutrient content, or TN、TP、TK,was presented as: fertilizer (11.039g kg -2 )>fowl manure (10.953g )>maize (10.560g )>control (9.580g );Total AN,AP,A,was shown as:fowl (1287.670 mg -1 )>synthetic (925.889 )>sheep (825.979 (445.486 ). fertility, among which first two reached higher quality. Fertilizer conducive yet long-term application cause degradation like non-point source pollution, compaction, productivity decline. Ultimately, combining biochar recommended fertility. Biochar green play an apparent role improvement only when there abundant water. above views provide theoretical support curbing improving quality, enhancing productivity, promoting virtuous cycle ecosystem.

Язык: Английский

Research on the impact of irrigation facilities on agricultural planting structures under the risk of disaster loss

International Journal of Disaster Risk Reduction, Год журнала: 2024, Номер 116, С. 105087 - 105087

Опубликована: Дек. 11, 2024

Язык: Английский

Interaction effects of different chemical fractions of lanthanum, cerium, and fluorine on the taxonomic composition of soil microbial community

BMC Microbiology, Год журнала: 2024, Номер 24(1)

Опубликована: Дек. 27, 2024

The extensive mining of bastnasite (CeFCO3) has caused pollution lanthanum (La), cerium (Ce), and fuorine (F) in the surrounding farmland soil, severely threatening safety soil ecosystem. However, interaction effects various chemical fractions La, Ce, F on composition microbial communities are unclear. In our study, high-throughput sequencing was performed based pot experiments four types combined soils, i.e., La + Ce (LC), (CF), (LF), (LCF), concentration ranges these three elements 20–240, 40–450, 150–900 mg kg–1, respectively. improved Tessier method used to investigate variations compositions. result showed residual form (La_RES) displayed restraint Abditibacteriota, leading its undetected level highest LC-polluted whereas promoted relative abundance microbes (Planctomycetota, Elusimicrobiota, Gemmatimonadota, Rozellomycota) by more than 80%; exchangeable organic-bound forms as well iron-manganese-bound were identified stress factors for sensitive bacteria (e.g., WS4, RCP2-54, Monoblepharomycota) CF-polluted soils; LF-polluted water-soluble most toxic effect Nitrospirota, FCPU426, decreased while La_RES GAL15, showing decline 80% LCF-polluted soils. Our study revealed both inhibition promotion element growth communities, providing a certain experimental evidence support further exploration treatment environmental elements.

Язык: Английский